ID   RS21_GEOSE              Reviewed;          56 AA.
AC   P23829;
DT   01-NOV-1991, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 2.
DT   25-MAY-2022, entry version 70.
DE   RecName: Full=30S ribosomal protein S21;
GN   Name=rpsU;
OS   Geobacillus stearothermophilus (Bacillus stearothermophilus).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Geobacillus.
OX   NCBI_TaxID=1422;
RN   [1]
RP   PROTEIN SEQUENCE OF 2-56.
RC   STRAIN=799;
RX   PubMed=1772592; DOI=10.1515/bchm3.1991.372.2.955;
RA   Herfurth E., Hirano H., Wittmann-Liebold B.;
RT   "The amino-acid sequences of the Bacillus stearothermophilus ribosomal
RT   proteins S17 and S21 and their comparison to homologous proteins of other
RT   ribosomes.";
RL   Biol. Chem. Hoppe-Seyler 372:955-961(1991).
CC   -!- SIMILARITY: Belongs to the bacterial ribosomal protein bS21 family.
CC       {ECO:0000305}.
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DR   PIR; S17866; S17866.
DR   AlphaFoldDB; P23829; -.
DR   SMR; P23829; -.
DR   GO; GO:0005840; C:ribosome; IEA:UniProtKB-KW.
DR   GO; GO:0003735; F:structural constituent of ribosome; IEA:InterPro.
DR   GO; GO:0006412; P:translation; IEA:UniProtKB-UniRule.
DR   Gene3D; 1.20.5.1150; -; 1.
DR   HAMAP; MF_00358; Ribosomal_S21; 1.
DR   InterPro; IPR001911; Ribosomal_S21.
DR   InterPro; IPR018278; Ribosomal_S21_CS.
DR   InterPro; IPR038380; S21_sf.
DR   PANTHER; PTHR21109; PTHR21109; 1.
DR   Pfam; PF01165; Ribosomal_S21; 1.
DR   PRINTS; PR00976; RIBOSOMALS21.
DR   TIGRFAMs; TIGR00030; S21p; 1.
DR   PROSITE; PS01181; RIBOSOMAL_S21; 1.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Ribonucleoprotein; Ribosomal protein.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000269|PubMed:1772592"
FT   CHAIN           2..56
FT                   /note="30S ribosomal protein S21"
FT                   /id="PRO_0000178300"
SQ   SEQUENCE   56 AA;  6723 MW;  23A6B284179A0195 CRC64;
     MSKTIVRKNE SIDDALRRFK RAVSKTGTLQ EVRKREFYEK PSVRRKKKSE AARKRK